[WIN32K] Add some NULL checks for THREADINFO::rpdesk

[reactos.git] / win32ss / user / ntuser / winpos.c

diff --git a/win32ss/user/ntuser/winpos.c b/win32ss/user/ntuser/winpos.c
index 79e2973..f9ce258 100644 (file)
--- a/win32ss/user/ntuser/winpos.c
+++ b/win32ss/user/ntuser/winpos.c
@@ -436,12 +436,12 @@ co_WinPosActivateOtherWindow(PWND Wnd)
 
    // Find any window to bring to top. Works Okay for wine since it does not see X11 windows.
    WndTo = UserGetDesktopWindow();
-   WndTo = WndTo->spwndChild;
-   if ( WndTo == NULL )
+   if ((WndTo == NULL) || (WndTo->spwndChild == NULL))
    {
       //ERR("WinPosActivateOtherWindow No window!\n");
       return;
    }
+   WndTo = WndTo->spwndChild;
    for (;;)
    {
       if (WndTo == Wnd)